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Lars-K
05-04-2023, 01:01 PM
New calculator that will calculate the bc of a roundball bullet.
You can find it here: https://weatherby.dk/BP/bc/BC.htm


313709
ulav8r
05-04-2023, 08:16 PM
Have bookmarked it. Are you going to make it available as a downloadable file?
TD1886
05-05-2023, 12:22 AM
If you have a LabRadar chronograph it will give you the REAL TRUE BC at any distance. One of the neat things about that chrono.
ulav8r
05-05-2023, 01:26 AM
Just tried it again. This time it did not calculate the weight.
Lars-K
05-05-2023, 08:45 PM
Works here. Remember to fill in values for diameter and weight. Using diameter 0.535 in and weight 230 grs gives the result of BC 0.0755
Lars-K
05-05-2023, 08:47 PM
@ulav8r I will convert it to a download file. Just need some spare time to get it done...
megasupermagnum
05-05-2023, 09:28 PM
If you have a LabRadar chronograph it will give you the REAL TRUE BC at any distance. One of the neat things about that chrono.

A Labradar will not work with a patched round ball. It doesn't really work with any muzzleloader. Really a Labradar is good for modern handguns and rifles, and thats it, nothing else.
megasupermagnum
05-05-2023, 09:29 PM
Just tried it again. This time it did not calculate the weight.

It couldn't do that since it doesn't know what alloy they are cast with.
ulav8r
05-05-2023, 10:01 PM
The first time I tried it, it calculated the weight after I put in the diameter. That would be of some use to me. If using a round ball, I could care less what the BC is. The only way I can see to alter the BC is to change the alloy and most alloy changes are not suitable for use in a round ball.